51457123757293 has 2 divisors, whose sum is σ = 51457123757294. Its totient is φ = 51457123757292.

The previous prime is 51457123757167. The next prime is 51457123757309. The reversal of 51457123757293 is 39275732175415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50664600060649 + 792523696644 = 7117907^2 + 890238^2 .

It is a cyclic number.

It is not a de Polignac number, because 51457123757293 - 2¹⁷ = 51457123626221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51457123757393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25728561878646 + 25728561878647.

It is an arithmetic number, because the mean of its divisors is an integer number (25728561878647).

Almost surely, 2^{51457123757293} is an apocalyptic number.

It is an amenable number.

51457123757293 is a deficient number, since it is larger than the sum of its proper divisors (1).

51457123757293 is an equidigital number, since it uses as much as digits as its factorization.

51457123757293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55566000, while the sum is 61.

The spelling of 51457123757293 in words is "fifty-one trillion, four hundred fifty-seven billion, one hundred twenty-three million, seven hundred fifty-seven thousand, two hundred ninety-three".